Gearing.



W. L. SGHBLLLNBACH.

GEARING.

AHLIOATION FILED AUG. s, 190e.'

RENEWED 00T. 3. 1908.

Patented May '4, 1909.

s SHEETS-SHEET 1` iB l 3 Wi r11 51.55 E 5.

@MA1/@1w W. L. SGHELLENBAGH.

GEARING. APPLIGATION'PILED AUG. 3, 1906. RBNEWED 06123, 190B.

Patented May 4, 1909.

5 SHEETS-SHEET 2` W. L. SGHLLBNBACH. GEARING.

APPLICATION FILED AUG. 3, 1906. EENBWED 00T. 3, 190B,

Patented May 4, 1909.

5 SHEETS-SHEET 3.

7 J z mi f f 75 05 los 116' .le 45 l 106 9g l 124 25 1/5 1115104 50 Z5 17100 55, 129 2,2 92, 9 19 6' .135 L 5p Ozd `'VWM-H25 ,I EVEN-'f :,f, l x'l /itm W. L. SGHELLENBAGH.'

GEABING. APPLIOATIUH FILED 16.3, 190s. BENEWBD 00123. 190e.

Patented May 4, 1909.

5 SHEETS-SHEET 5.

, ration of my improved d'evire. f "45 end elevation of the s-:anxepartly broken .a\\'ay, but with the Speed-barrel turned for UNITEDSTATES* WILLIAM L. SCHELLENBACH, or HARTWELL, OHIO.

BEISSUED Speciflcation of Letters Patent.

PATENT OFFICE.

Patented May 4, 1909.

yApplieation Ailentmglrst 3, 1906, Serial No. 329,029. Renewed October3, 1908. Serial No. 56,057.l

To all whom it may concern:

Be it known that LVVTLLIAM L. SCHELLEN- n wn, a citizen of the lTnitedStates, residing at l-lartwell, in the County of Hamilton la n d StateIot' (.)h io, h ave vinvent ed certa in neuv and useful lmproveuiente inGearing, 1of which the following is a Specification.

lMy invention relates to improvements in gearing and'consists in theprovidingr of new vand improred means whereby the spindle may be givenvarious speeds" by norelmeans Heier-tivelyacting; upon the spindle orthe ybullwvheel having' Connection *with the siindle; in providing meanswhereby vanous speeds, may be imparted in novel manner to the spindlefrom a prime mover throughrearing interinediately acting on thebull-wheel Hel'urtd to the Spindle Outside the Spindle bearings; invproviding 2 O` moana for changing.y the-speed of the spindle thespindle, with a speed-barrel having gearing' arranged toselectively'mesh with said slldmgl gea-rs; in proi'ldlng saldspeed-barrel wlth gearing' Whoserotaryv axis IS lco-Incldent- Witli therocking aXiS'of Said vbarrel meshing with `:rearing: Whose rotary axis1S coincident with the rotary axis ot the spindle for iinpartingilselective speeds to the bullwlleel; 'fu1'tlw1-iu providing' novelshifting mechanism on said barrel for selectively im- 345 lpartingspende direct to the Vspindle 0r thronq'h the medium of said barrelgearing to the bull-wheel thereof; further in trans.- fori-ingf suchselective speeds to the leadavi-ew or tried-rod; and further in tbeparts,

40 and in the consti-notion. arrangement and combinations of partshereinafter more f-nlly described and claimed.

inthe drawnge: Figure 1 is a front ele- Fig?? is an disengafiug itstumbler pinio'ne. a eroe Fig. 3 1S eotlou ot the head-stock on the linef A of Fig. l, and partly brokenaway to Show the speed-Controllinghandles. the llnnbler pinion being' in engaged rela ion. Fig. :L is across-Section ot the saine on the line B`B of Fifa". l.

disenaaginrr its tumbler pinions.v Figa 6 'is v Fig'. 5 a plan View ofthe` head-Stork -n'xth the cap of the head-Stockremoved and theSpoed-barrel turned for C+C of Fig. :2. Fig. 7 of the head end of thelathe, partly broken away, and partly showing the speed-,barrel and itssupport in section on the line DAJ) of Fig. thespeed barrel. partlybroken away. Fig. 9v is a detail of' the speed. barrel andateconneet-ioneY in c1oss-section on the line of Fig. l. Fig. '10 is; afront elevation of the Fig. 8 ie a perspective'view of.

a horiyontal rieetion of the saine on the line., i

1s a front elevation head-stock partly broken away Showing the speed'gage Connections.

Fig. 12' is an enlarged end elevation partly broken away Showing thegearing between the spindle and lead-serew.v Fignlz isa frontelevationof thesaine partly broken ay'vay and partly in irregular Section ontheline .l `-'-F of Fig. 1Q. rFig'. 14 is a front elevation ot the fe`ed,Qa-ge for the lead-Screw. Fig. 'l5 is ,a side elevation showing;` theFig. 11,115 a.` lan vier: ofthe Speed gage laid outA -1n p ane.-

Fig'. 1G is afside ele-ration of one of rvthe change-gears. v f

a represents` the lathe-bed or shears, bythe headetock, if the Carriage,and d t-lxeNtailstock. Y

n e is a Spindle which is jonrnaled Inbearings j' g in the-liead-stock.

'/'1 is a prime nuove-1',V Shown as pulley,

although it is obvious that. this lmay also be a gear driven forinstance from, an `electr-io motor or other actuating device. y j

In my improved device various Speedsv are transmitted to the Spindlefrom the prime mover, either by connection with saidl Spindledirect-'from the prime mover ort-hrou'gh gearing. or through the mediumof gearing transmitting motion `at- Various Speeds` to the bull-Wheeladjacent the head-center yand face-plate, various speeds oflongitudine-l :,I.;

movement being also transmitted to the'ea'r- -riage and cross-slide onthe carriage for ini `parting proper relative speed of rotation-to theWork' and of travel to the tool. The

various means which I employ for the puri pose' will now be cle-ScribeThe pulley IL is secured, as by allie 'lieto-'2i Gears m. n slide `thespindle, the said sleeves la and r being respectively located end forend, or longitudinally of the vspindle.. The sleeve 7" at its endadjacent the sleeve lo has a clutch-face s with whidf a clutch-face t onthe gear m is adapterlllt'o make engagement for forming aclutch'fiibetween said sleeves for causin said sleeves:r to rotatetogether at the s ee of the prime mover. A` telesco ing s eeve v takesabout the sleeve 1 and sides longitudinally thereof and has Asplineconnection w with the same. At its inner end it carriesA clutch teeth fcadapted to make enga ement with the clutch teeth y on the spln le for A-to move ,wit Asaid telescopin forming a clutch z between lsaidtelescoping said ,.clut

n"shifting rod 7 'sliding' inbearings 8 onthe having positioning4 lugs12 a a ted to selectvouter bearing 4 for positionin said cap 9 of theheadestoc The rod 7 carries a fork 10, the tines o which take to eitherear m at itseriphery, one of saidltines ing receive' A .by an annularroove -in the gear n.' Theshaft 2 slides ongitudinally 1n its bearin s,its handle' 3 ively engage positiomng note es 13 in the ears *fr m n indesired location lengt wise o the positions the form shown, one'forenfsleeve z', there Abeing four of these selective gia'ging the clliixzhu and one for each of the end. ing end is provided with openings 17 toac? l gears. A spring 14 causes normal engagement -between saidpositioning lu s and notches. 1/t will be noticed that the ed has anoverhanging head-end 15 .and that the pulley L is located above thisoverhanging The bottom wall 16 of the overhangcommodate a belt which mayass through openings over said pulley and 'be driven from a motorattached to the legs of the machine. v

18 vis a gear-barrel or tumbler. It rocks in the projection 19 of thehead-stock in which it has bearing,i the journal face 2O of said 'barrelbeing preferably at its periphery. order to prevent longitudina movementof said4 barre l, 'jt is provided with a segmental ylug 2l received by asegmental groove' "22 in the protrusion or bearin 19. A pinion 23 isintegra]l with or secure to a shaft '24 journaled in bearing 25 in whichit is lon i-' tudinallyslidable. .The rotary axis vof' tais ShaftiS@nadert With-:th skies existo? Inv the tumbler. A ear 26 meshes with thegear numbered 1 an' has spline-connection 2T with the shaft 2l fortransmitting motion from said 0'ear numbered 1 to the pinion 23, thelatter eing arranged to mesh with the bull-wheel 28. An integral gear 29is secured rigidly with relation to lhe 4gear 26. A pinion 30 mesheswith the internal gear. It is mounted on a shaft 31 journaled in abearing 32 in the tumbler and at its outer end carries a geur 33 adaptedto selectively mesh with the gears lettered Z, m or a through a slot inthe head-stock. The gear 323 is shown as an overlianging gear andpreferably one of a seriesof change-gears. ll prefer to provide thechauffe of gears by malo ing the gear 33 the smlest of the series ofchange gears and forming it as part of the shaft 3l. The change-gears oflarger diam eter of which there are preferably two, as shown at 33a andE53", (see Figs. 15 and 16), are arranged to telescope tle gear 33 andrespectively have internal teeth 33 and 33d arranged to engage the teethof the gear for causing rotation with the latter. The speed barrel has arecess Z at its head-end for am commodating the slipping gears m n. Ifdesired the tumbler may be provided with a second shaft 36 having a gear37 meshing' with theinternal gear 2), and a gear 38, which may be one ofa second series of change-gears similar to the change-gears 83, 33 and33h, and which may be mounted similarly to said last-named change-gears33, 33 and 3S", and adapted to mesh with the respective gears letteredZ, m and n.

lIn order to cause transmission to be effected selectively through theclutch .e or the pinion 23 to the spindle, I provide a rockshaft 39journaledin a bearing 40 in the tumbler and having a pinion 4:1 meshingwith a rack 42 on a collar 43 secured against longitudinal movement to'the shaft 24 :ind having spline-connection 44 with the tulnf bler. (SeeFigs. 7 and 9). The. collar 43 has Shifting lugs 45 4G` forming contactfaces having n shifting space 47 between the sa-n'ie. barrel and has agroove 50, (see Figs. 52 G and 8), the walls of which vengage with anannular iiangc 51 on the telescoping' sleeve o. This block has a lug 52forming a Contact part adapted to be engaged by the lugs 45 4G forshifting the block and consequently the telescopiug sleeve for engagingthe clutch z,Y the shifting of said block also causin longitudinalshifting of the pinion 23. lgt is e- .A block 48 rides on rods 49 in thef sii-able however that slaid clutch and lpinion shall-not besimultaneously engaged. In order to prevent. this, 'I providethe blockwith a latch 53 slidable longitudinally in a recess 54 in the block andhaving a in 55 slidable in :L groove in, saidbl'ock or preventingturning of thela'tch.'l A spring 57 backs the Llach?" The latch hasV miengaging 111g4 58 hving an inclined face 59 adapted to be engage/d bythelug 4G for raising thelateh and permitting said lug to pass saidlatchwhen the collar 4B is shifted in one direction, thel sidlugelg'aging said latch for shifting said 'block when said collar is movedin the ot-her directio11.fv Thus when the collar is shifted fordisengagingthe inion 23 and engaging lfling of the collar will firstcanse disengagement of said pinion from the bull-wheel owing to theshiftlng s ace 47 between the lugs 46. Prior to the s ifting 'o f saidblock 48, the .lugl vwill engage the inclined face 59 of the 'latch thusraising the latcli.A The latch being raised and the lug 46 continuingits movement, the Said lug will next engage the lug 5 2 on the block,the further movement of said collar causing shifting of said block.Prior to the'shifting of said block however, the )inion Q3 will Ihavebeen shifted longitudina ly sufficient to disen age it fromthebull-wheel. The block fuor eing shifted will rause longitudinal'movement of the telescopii-ig sleeve, thereby causing yengagement ofthe clutch a. v[n the 'meantime the latch 53 will have been ,re-

traeted by the spring `57, its lug 58 taking in 'rear of the shiftinglug 46, which latter is now located between said latch and the lug onthe bloc-k'. It' it is now desired to relingagethe pinion :23. thecollar 43 being shifted inthe opposite ldirection will cause o posite'shifting ot said block. blbCk has been timel oppositely shit't ed adistance sufficient to disengage the clutch z, a pin 60 secured in arecess in the tumbler Will make engagement with the latch for raisingkthe same out ot' range of the lug 476. I aecomplishthieA raisingbyproviding the pin with an inclined face arranged to make engagementwith; the inclined wall of a recess (il in the'latch.' l .and the clutch.e released, theshifting ot' the collarl 43 is. continued for causingengagement between the pinion 2?, and the bull- For rocking the tumbler,-lv employ the rock-shaft 3S) which therefore actel as a gearshiftingand tutnl'iler-rocking" shaft. This shal'tlvor lever is shiftable atright, angles to I y the gear numbered 1, and the elutc'h'zfbe--" Y therocking axis of the tumbler in a Slot. (i2

' formed inl the face of the projection 1 9.

The adjacentI walls of said slot., lwhich l ,Lshown larc Jshaped, areprovided with. -recesses (33 with which the lugsl (i4 on a sleeve G5 areadapted to engage for positioning the,

tumbler radially and causing propel' engagement l-ietxlveeni thechange-'gears atl the outer .end of the tumbler and the gears takingabout the spindle. The sleeve has spline- (fonnection (S6 with the tubewhich forms Vthe v bearing,r 40, the tube being stationary inthe speedbarre] has an annular groove (i8 into Whichfa lug 6E.' on the sleeve 65takes. The shaft 39 is lVhen said The lug 46 being disengaged,

"A permitted slight lonfritudinalmovementiin its bearing-tube, an 'ziSpring 7() interposed between it` bearing and pinion-for normallycausing engagementbetween yfsaid sleeve-lugs and recesses, thereby.loekingwt-he speed-barrel in rocked position.' The handle v has a pin 71adapted ,toselectivelylengage holes 72 in the outer en'd of thebearingtub'e for locking the shaft 39 in 'rocked position when eitherthe Clutch 2 or the pinion 23 iin engaged position. Y 'lfle power istransmitted to the spindle i" at points adjacent the head-center 73 orfaceplate 74 thereb)y relieving the spindle of torsional strain. Thusthe inner end of the s indle provided' with n -Ylafnget. y The Eullwheelat the inner end 'of' the *I spindle has aA flange 76 whichjis'securd'tothe vflange 75 by means of bolts T7; th'e'laiige 7G being outside theflange=75:"""1`lie' plate 74 has a threaded hub-78 whiehl's'crwe into.the `threaded socket' 79 of thegbtlll-, wheel, the threads beine*arrangedinf'sueh manner that the force of thev tool .a'gainSt the workwill tend to screw up"the`- plate. The greater theforce appliedtfliere Kl fore, the firmer will be the' engagement b'e'l 'Si tween saidllangefS, and the"irmerwil'l `the bull-wheel be locked tothe'face-platej"The power applied is transmitted to thejbullwvlieel fromv its periphery fromavv source Y which hasno drivingeonneetion witlrtlespindle, thereby-relievinv' the lepindle ofal'l torsional strain. It.willlbe furthernotied that the clutch z `is locatedimmediately ad` 100'jacent to the inner bearing of'the spindle u closely adjacentfthebullwheel and, ead center, and that it too hars` the poweritra niittedto it from a source which has'no' further driving connection y'with-theSpindle; thus relieving the spindle of torsional strain".rx lower istransmitted to the Spindle from' the prime mover through thesleevesftakig thereaboutand the clutch 2," the saidsleey'fe beingclutched together for i'i'npartngthe speed of said prime movergto"the'spilndl or the-clutch between the sleeves ma v disengaged and thepowerV transmittedt 67 is a Shiftiiighanflle whichY through the gearslettered l m, or Wafthe ,Selective gears 33 38, the gvars!) alrdg'material of which .the work is composed,

should be ,maintainedrhaving' due regard also to the depth of cut beingtaken at the time. Thus it has been ascertained that 'cast iron may beturned with greatestv efiiciency dat a given circumferential speed, caststeel at another circumferential speed, and cold rolled steel, machinerysteel andv other ma'- terials at still other speeds, and in order tomaintain these proper relations or greatest eiiciency and further forrelieving the spindle of torsional strain, my improved device isexceptionally useful.

In order to attain the requisite spindlespeed in convenient manner andfor guiding an inexperienced operator as to the proper gearing to beemployed for attaining various circumferential speeds at givendialneters of Work, I provide a speed-gage which will now be described.In describing this feature I shall assume an exeinplification of mydevice in Which sixteen different speeds may be imparted to the spindlefrom tle prime mover. through the gears taking about the spindle at theprime mover and the clutch between the'spindle sleeves; secondly,through the tumbler pinion 33 andv two cha nge-gears taking thereabut,and thirdly, through the clutch z and bull-wheel pinion, the first ofthese imparting four dierent speeds to the spindle, the resultante ofthe second multi plying these speeds by two, giving eight, and thethird, multiplyingr 'these'resultantsagain by two, resulting` in sixteendifferent spin- (lle-speeds.i

80 is a gage-rod which has sliding connection in a bearing 81 of thehead-stock. A

' rack 82 is on the gage-rod and is meshed by said longitudinallyspeeds.. Opposite thefrjes ctivefs eed ,noted inlthis speedfcolu'mn, tep which may be termed 'theprimaryolumng @rearranged into' transverse orsecondaryV columns S19-Which containnotationsof diam-jV "eters vand""gearing adaptable for the-given. vs ee s.

a pinion S3 ou the shifting-shaft'Q. (See Figs. 1, 4, 10 and 11). Afinger v84 is mounted on the gage-rod and selectively points to thecolumns 85 of a gage-plate v86 having guiding notations t-hereon.Placing the finger opposite a given column affects'the position of thesliding gears or clutch located about the spindle at the prime mover.There is operative connection as already de. scribed between saidshifting-shaft 2 and about the spindle.

87 is an annular gage having columns $8,

these vcolumns registering Withjth columns; These columns of theannularf'fgage' 85. comprise notations of the diameters .qifwoik and ofgearl column 89 yfof desirable circumferent TheA construction, forms4 'aspeedc :inging guide, comprisingan indeili-menij These are obtainedFirstly,`

slidable gears taking e columns 8,8, v

`forni vsho The terni front gear out denotes thatthe bull-Wheel pinionis, out of mesh with the bull-Wheel, and the clutch z is in en-v Frontgear in denotes that gagei'nent. i theclutch is out of engagement, andthe bull-Wheel pinion in mesh With the bull- 'wheeL The notation 34under the term changel gear denotes that the change gear (33) having 34teeth, is upon the tumbler- 'pinion shaft for acting as the tumbler-lpinion adapted to mesh with the selective gears taking about the spindleat the prime mover position. The notation 44 denotes that thechange-gear (33) having 44 teeth, is acting as the tumbler-pinion, and'.the

blanks under 'the term change gear denote that the usual change-gear 33is intended. to be used. Illustrating the use ofv the speed gage, itWill be assumed that a piece of Work is placed in the lathe for turningthe same, and that such Work is 4of such material or character that itAis desirable to turn it at a peripheral.4 speed of twenty feetper'n'iinute, and that4 it is five inches in di-` ameter. The gage 87which is on a shaft journaled in a bearing 91, is then turned by thehandle 92 until the numeral 2O appears through the aperture 93 of theshield 94j`shown as a part of the gage-plate 86. The secondary column 90opposite the numera-l QO'Will then show through the opening 95 of thecover 9G. The ligu're 5 is shown in the fourth primary.v column of thesecondary column thus exposed. The shifting-shaft 2 is then turned tobring the finger 84 opposite the fourth column, in which the figure 5appears. `This in turn will shift the gears sition lWithin the', pulleyandV exI osing the smallest gear opposite the v tumb erpinion,

tionsfareso 1nade,'the pieceV f-lwork of 5:v inches diameter will be'rotated ntie periph-'f` eral speedbf 2O feet per minute.." .p

For- -operating ,th lead-screw which, in the Wn,i4 also acts ,as the 'pfeed-rod f I hnge ma.-.

nderthe term' frontgearfin. indicates that the bull-wheel piionfisto bein mesh with the bullLwheel. """When vtlieseconnec- VVheny now scopeabout said gear 105 telescoping one upon thel` sleeves 104 shaft 9S .and'provided otherand about said respectively with shifting collars 106107. The sleeve 105 is journaled in a bearing 108 l ot thel gear-box.The telesco ping gears have l spline-'connection with each ot ier. Atuinl bler-vplate ,109 rocks on a stud 110 about the l rotary axis ofsaid telescoping gears and carl Aries gears '111 112 either of which isadapted l to. selectively engage gear 97 forimparting forward or reversemotion to the lead-screw ich of said gears dependent on wh is 1n mesh fwith the spindle-gear.- The tumbler-plate is ll rocked by means of acrankpin 113 ona i crank-shaft 11-1, journaled in' bearings 115 andoperated by a handle 116. The crankpin works in aslot 117 in thetumbler-plate or shifting the latter. The gear 103 meshes with the gear111, which latter is suciently wide .that ear 103 may not be shifted outof range t erewith. 118 is .a rockerfplate rocking on a shaft 119 whichlatter has aV gear 120 secured thereto. 121 is a stud secured to therocker-plate and vcarries a sleeve 122 on which there isa gear 123meshing with the gear 120. Suitable change-gears are adapted .to beselectively placed on said rsleeve, which in turn are adapted to beselectively v101 102 103. I-'have-shown these changegearsat .l2-1, and Ipreer to arrange them step-lke-in the box when out o use.. Theserespective change-gears have tongue and groove connection 125 with' thesleeve 122 :1nd may b?. readily taken out'of said box in whichthey'areadapted to loosely rest and slipped on and off of said sleeve. A spring126 backs saidA sleeve for normally pressing the change-gear on thesleeve ax1- ally outwardly forcausing it to. remain in transverserelation with its mating sleevegear when in mesh therewith.. The gear-b100'has a cover 127 which has a handle 1.28 50 and forms a lever actingto clamp the rockerplatein position. This cover is pivotcd on astud-shaft 129 mounted in bearings 130 on the box.. The stud-shaft 129at itsonter end has a lscrew-extension 131 turning nlanv intcrnally`threaded socket of a"V clamp 132 which takes outside the` outer faceofthe rocker-plate, the latter having 'an engaging face 133 for theclamp. To prevent turning ot the -clainp atfpin 134 provided. Therockerfplate also has a handle 135 for ina-j 1\ipul tion. vTherocker-plate has a position ing-slot 136, the Iwnllsof `which-are adated toyengag'efajpositionin Jug/.137 on the hex.i

it is desire Lto change the e-oj the lead-screw, the telesooping gears101:

engaged with the' respective gears 102 1.03 are so' 'p"o'iti'oned `astofpermi't'se tive "meshing fof theV .selected change :gear therewith.'`If it isfde'sired'th'at thel chang` e gear shall mesh with the gear101,`the are pushed inwardly so as/to permit the gear 101Y only tobe intransxferse ran'gel.

of thechnge-gear, or itdesiredlto `me with the gear-S102 103, theselected pushed outwardly by means of vits colar v for 1 shitting itinto transverse plane lwith the 7 5 change gear. The proper change fgearl is then placed'on the sleeve 122 and the'rockerplate rocked uponits axis for vcausing `me 's 1 i between the changeear and the selectedtelescopno' gear. en proper mesh b etween sai lgears has been obtained,the cover 127, which' until now has been inraised. po-' sition, isthrown downwardly, thereby draw?l i ing the clamp 132 inwardly andclampingfit against the face l133, which clamps the rocker-plate tor thegear-box. the cover is Vpressed down it also locksf, theA` change-gearswithin the box, thereby .preventing loss`or displacement of the same.

The shaft 119`is `ournaled in bearings 138 in the gear-boxen( carries agear 139 and a gear 140. The gear 139 meshes with .a gear v141 journaledloosely about the lead-screw.' 1-12` =The lead-screw is journaled 'in abearing 113 in the box 100 and ina bearingr at" vthe tail end of thelathe-bed. A slip-co lai' 145 slides longitudinally. 'A and has spline-There is ".1 clutch ear is' on the" lead-serewf connection 14,6thereigvith.A 114-7y between thefgear1 .i1, 148 is on said saidchange-gears to slipping collar. nia be selectively thrownI intoconnection wit the gear 141 bg means of the clutch or with the ear yc5115.- l. ing its teeth to engage wit the latter.

determining whether the sli ping c o ar shall make clutch or 4gear-tootconnection l pro/vide a gageplate 149 l1aving-columns `150,151 of feedsobtained, a flange 152 on the slip-collar being adapted to register` lwith either of said columns( Having thus fullydescribed my invention lwhat l claim as new and desiree to secure by Letters Patent is: i i 1.In a lathe, ih ofl a spun l dle, a prime mover therefor journaled therelabout. gearing jourualed about and slidabl'e longitudinally of said SP Adriving connection with sa1d"prnne mover, a rockinggear arranged toselectivelyV mesh". therewith, und gearing between Asai last# named gearand t ie spindle, the said spindle having drivingA connection 'adjacent'its 111-, ner endwith`said' last-:named gearing l 2. Inn let he,. thecoxnbinationfr' piu, I-

dle, .a sleeve.- 'oilrnnled'thereebonn l mover secure., tosaid'sle ,f e,geht-sof ies tref; ist

, operativel connec about, means for ies ent diameters slidable on saidsleeve and roable driving 'connection between said slidtatin therewith,a tumblerv whee at the inner end 'of said bullwliee1`having operativecon said tumbler-gear.

#3. In a lathe, the combination of a s die, a sleeve joui-naled ab rimemover on said slee connection with said gear, and a bullable sleeve andsaid spindle.

pindle, said nection with a plurality of sleeves journaled thereabout 9.In a lathe, the combination E alspindle,

longitudinally of each other, driving coii- 7i.

innection between said sleeves, a slidable sleeve out safid spind e, ataking about said spindle, driving connecl ve, sliding gears of tionbetween said last-named sleeve and saidf i'ereiit diameters rotatively,secured -to first-named plurality of sleeves, Teleasable said sleeve,5atumbler-gear having drivin driving connection between said1 slitlable,Y

wheel, and gearing driven by said tuinblering connection comprising aclutch and Si gear having operative mesh with said bull! train of gears,and mea-iis wheel.

4. In a lathe, the combination of a dle, a prime mover jou Gearingjournaled about llaving rotary connection mover, a tumbler-gear, saidtumbler-gear, and

a clutch an dle, a pluralitylbf sleev 7. In a' lathe, t `e combina dle,sleeves journaled lon other bout said spindle, driving connection Y betwmg simultaneous rotati for drivin one of said s sleeves and the spindle,

lectively causing oper-at l`said clutch and of said l gears.

8. In a-lathe, the combination o a plurality of sleeves journaledtliereabout ncction witlrsaid tumbler longitudinally' of each iiectionbetween said sleev taking about said spind tion between said last-nafirst-named plurality of spinbout, and

rnaled theiea said spindle with said prime gearing'driven bv a clutchand rality of gear-trains betwe named" gearing and the Vspi clutchvhaving connection gear-trainsland 'the spindl 5. In a lathe, thecombination of a s dle, a prime mover journaled tht-,reabolltl jacentoneend thereof,` geaiin Vof said inadv g; jourfnaled gear, 't the tweensaid last- K dle, and meansY iinelctilig s ad bii'fibn of a Spin*4 esjournaled thereA 'tiimbler-pinions operatively connected with 'erativelyconnectin saidV tumbler-gear, sliding gears journaled said sleevesfor`simu taneoufsjirotation, an

a trainjfof gea-rs betweeigvsaid sleeves for ereiit relativerv sf"115,111', clutch interposed be'tweehsaid (lriv saidnta'in of A, andineans` .for

en sleeve and the ars selectively wheel' Iig'sa hand Said the rotaryaxis of said pinion, a tumbler said sleeves having eenthnffgij-fcaustween said tumbler mion and said last- 011 therepf, meansnamed gearing for friving said pinionr vat leeves, aclutch and l a traino gears between the other of said and means for sel spindle, a bull`wlieel therefor, a pinion 120;A

ive connection of l meshing with said ast-named train of i other,driving con- ,l journaled about-and sliding longitudinall es, a slidablesleeve iI of said spindle, and means. For 'causing mesi le, drivingconnecg between saidI plurality of tumbler-pinions. ined sleeve and saidl and said last-named gearing for driving said sleeves and releas- Ipinion at different speeds.V l v 'Y dinglgears, a bu sleeve and saidspindle, said releasable driv.

i' selectively op.- eratively `connecting sziid clutch and traiii ofgears. p 10. In a lathe. the combination of a sEindle, a plurality ofsleeves journaled t ereabout longitudinally'of each other, 'said sleeveshaving driving connection with each 'j' other, a slidable 'sleeve takingaboutsaid 85 spindle', saidjlast-nainedsleeve having drivf. Y

in 4raity of sleeves', said slidable sleeve havin releasable drivingconnection with saij f spindle, said last-named driving 'connection 90,.comprisingv a clutch and .variable speed gearing, and means forselectively opera#- tively connecting said clutch and said vari-L4 ables eed gearing. i

spindle, a rime mover joiirnaled about said spindle adiacent thelieadend thereof,- a bull-Wheel secured to said spindle at the tail endthereof, apinion for said bull-Wheel;` a. .tumblebgear for said pinionhaving coin- 100 cidnt'rotary axis t erewith, a pluralityof '.flbOlitSaid S indle, and means for selectively spindle, a bull-'Wheel therefor,av pinionv meshingh with said bull-wheel, a tumbler-v ose pivotal axisis coincident with vpinion having o erative connection with -iOIlv f V8-Spnsaid tiimbler-whee gearing journaled about gitlidlnally 0f each and'sliding longitudinallyof said spindle,

and means for causing'selective meshbe- 115q di'erent speeds. Y, 13. Ina lathe, the combination of a.

bull-wheel, a tumblerwheel Whose pivotal axis is coincident with` therota-ry axis of-said pinionfa plurality f aspiiidle, ofxtumbler -pinionshaving operative c on-' vWhe el, gearing 12.5-

11. n a. lathe, the combination of l causingsai respectivetumbler-pinions to' 1r05 `eeveshfrom, the other meshgwith said slidingears.

` J-Saik 'r-'Bigiiging ther clutch-faces of'sai'cl clutch or said ,ingthe bull-Wheel, a tumbler Whose pivotal l:ix'i 1s coincident with therotary axis 'off p iiiol'naV tumbler-gear, a gear normally: loos l'rotatino" `about said s i'ndle and meshing with said tumbler-gear, 'aclutch liid last-named gear and the,4

bet een" andineans forV driving said tumbler- A nlle, eer 'at variousspeeds.

In a 1ath e, the combination of 'a vspinbiill-Wheel'there'for, a pinionfor' driv- "bull-ivheel, a tumbler whose pivotal r oinciden with therotary axis of nitin', a tuin iler-gear, a gear normally loose yrotatingA about saidl spindle and inesli'iiiig with said tumbler-gear,a.,c lutch between said last-named gear and the lspinv ille,-ii`i'enisfondriviiig said tumbler-gear lat -various speeds, and means connectingwith suitlpinion and clutch for selectively en- '.gaging' therclutch-faces of said clutchy or 'said' pinion with said bull-Wlieel. 16.Inalzithe, the combination of a spin- 25":"t'1le, 'a bull-wheeltherefor, a pinion for drivingvv V the bull-wheel, :i tumbler whosepivotal axis is coincidentwitli the rotary axis of said'pi'nion, atumbler-gear, a 'gear normally losey.A rotating about said spindle and`neslfing Ywith said tumbler gear, a, clutch between said last-namedgear und ythe spindle' and means for driving said tumblergeary at.'various speeds.` 17 ,In af'lathe, the combination of a spin- 86""dle, abull-wheel therefor, a pinion for' driving the bull-wheel, :i tumblerwhose pivotal axis is'c'oincident with tlieyrotary axis of said iinion,n tumbler-gear, a gear normally loose y rotating about said spindle andv40 meshing with said tuinblergear, a; clutch between' said last-namedgear and the spindle, means for driving said tumbler-gear `at variousspeeds, and means connecting with.

said pinion and clutch for selectively en- 18. Al'n a lathe,the-'combination of a spin-A dle, a bull-'wheel therefor, a pinion fordriv-A ing the bull-Wheel, a tumbler Whose pivotal 'axis coincident withthe rotaryexisof said 'inion,` :i tumbler-gear, a gear normallyl loose yrotating about said spindle and meshing with said tumbler gear, a clutchbetweensaid'last-named igeur und the spindle,

me., ngi` gearing incliidin uflongi u dinally slidable gear-memberan yl, tudinally' .moving aid slidable members *.:i latch having engagementybetween 'thomlV 20. ln a lathe, the combination of a spinrious'speedscomprising a Clutch having a meshing geaiiiigiiicludin nlongitudinally slidable gear-member, an( meansy for longtitiidinally.moving said slidable n iembcrs matically disengacring said latch.

21.Y In a. lathe, tlie Combination of a spinl meshing gearing includinslidable gear-member, an( means for longi' tudinally moving saidslidable members having spaced contact-faces, and a latc i btween saidshiftiiicr parts. 22. ln n lathe, the combination of a spindle, means.for driving said `spindle. at variousl speeds` comprising a clutchhaving av lonfvitudiiially slidable clutch-member and mes iing gearingincludiner a longitudinally slidaible gear-member, antf means forlongitudinally movingsaid slidiible members comprising a plurality ofhavingv s need contact-faces, a. latch between said shi ting parts, :indmeans automatic'- ally reliisin'g'said latch.

f' 23. l'n a lnthe, the combination of a spindle, iiieiins for drivingsaid spindle at Vu.- iioiis speeds Comprising a Clutrh having allongitudinally slidable clutch-member andv meshing gearing includinv a.longitudinallslidable gear-member, ant comprising a plurality ofshifting parts having spaced contact-faces, and a lato beofone of saidShilling part-s and said latch diir'iiigpart of said longitudinalmovement and simultaneous movement between them dle, ubull-wheeltherefor, a pinion for riv ing the bull-wheel, a. tumblerWhose pivotal said inion, u Himmler-gear, tigeiir normally loose yrotating meshing with said tumbler-gear between said last-nziiiied: gearand tbe-spinthe clutli-faces of said said bull-wheel,

ivelyl engagingclutch or said pinion with comprising a plurality ofshifting parts, af latch between them and iiie'uns for autoj tween said.hiftiiinf parts, the contact 'fa" durinuf another part. of saidlongitudinal 24. In a lathe, the vcomb ination of a s incomprising aplurality of shifting parts and die, means for driving'said spindle at.va- 'l longitudinally slidable clutch-member andy i dle, means fordrivin'gsaid spindle at vii rions speeds comprising a 'clutch having 'a'fr v. longitudinally slidaible clutch-member vund a longitudii'ially'L'comprising a vplurality of' shiftingl arts shifting parts meansforlongii I tudinnlly moving said slidixble members liai'ing relativemovement between their:`

un axis` is coincident with the rotary' axis" 'ofV` 'about said`spindlouind.

av clutch` l 'i125 dle, means fordrivin'g said tumbler-geartiiiriousspeeds', and shifting means coiiiiecting` ivith'said pinionand'lutch forselect said shifting block having a contactlnally looseanis is coincident With the rotary axis of sald pinion a tumbler-gear, a`ear norly rotating about sai spindle and meshing Wit-h saidtnmblergear, a clutch between said last-named gear and the spindle,means for. driving said tumblergear at various speeds, and shiftingmeans connecting with said pinion and clutch -for selectivelyengaging-the Zclutch-faces of said clutch or said pinion with saidbull-Wheel,

said shifting means comprising a shiftin block, liaving connection withsaid clutc art part having contact-parts t ereg a .shiftin apart frolnsaid first-named con- -tact-part, a latch with which one of said- 'alaterally shfting-gear' having.

gear.

last-named shiftingparts is ada ted to engage, and means'for automaticaly retracting said latch.

26. In a lathe, the combination with a spindle, a tumbler, and a shafthaving av rotary axis coincident with the rocking axis of'sa1d tumbler,of trains of gearing between said spindle and shaft', one of said trainscomprisng a tumbler-gear and a' clutch, the other o-f said trains-'comrising riving connection with said tumbler-gear, and a tumbler-lever'rockable about ,its longitudinal axis for shiftin said clutch yandshifting gear, substantia y as described.l

. 27. 'In a lathe, the combination of a spindle, al bull-wheel therefor,a pinion meshing with said bull-wheel, ai tumbler and tumblergear, aspindleear meshing said tumblergear and joui-na ed about said spindle,said spindle having driven connection with said spindle-gear and saidpinion, and a tumblerlever forshifting said driven connection.

28.- In a lathe, the combination of a spim dle, a tumbler, aAtumbler-wheel, a plurality of driving connections between saidtumblerlwheel and spindle, a nest of differentlysized gears jonrnaledabout said spindle and slidable longitudinally thereof, a pinion onsaidytumbler having drivingconnection with said tumbler-gear andp'po'sitewhich the gears gf s aid nestfofvgears are arra'no'edto be -selec ly.placved,`"and a tumblerevermoving tra ersely of said spindle for causingmeshing f said tumbler-pinion l with `selective lever beingrockable'abo'ut its axis 'for operofd saidA nest of gears, saidtumbleratively connecting saidr spindle selectively Withilsaid spindle'rand spindle-geag bull-wheel "on said spindle, a pinion.' 1n' meshtherewith Vhaving l'coincidentaxis 'with said 'tumbler-- dle, aspindle-gear loosely journaled there-- about, a clutch between' thelatter and said. spindle, abull-wheel on said spindle, a pinion meshingtherewith, a tumbler, a tumblergear having coincident axis with saidpinion andV meshing `-withsaid spindleear and means for selectively'drivingv sai spindle from said tumbler-gear'through said spindlegear orsaid pinio 30. In a lathe, the combination of a, spindle, an internallyand externally toothed tumbler-gear, a pinion having' coincident rotaryaxis therewith, a tumbler, a spindle- 'gear 1i1eshing`with saidexternally toothed tumbler-gear, a bull-wheel on said spindle.

meshing with said pinion, and means selectivelly causing drivenof. saidspindle through sai( vspindle-gear or. said bull-wheel.

loosely jonrnaled thereabout, driving connection between sald. sleevesfor causing simultaneous rotation thereof, a plurality of gears` dle andhaving driving connection with said driven sleeve, a gear thereon inmesh v vith said tumbler-gear, and a releasable Aclutch betweensaidlastlnarned gear and spindle.

In a lathe, the `combination of a spindle, a driving sleeve and a drivensleeve loosely journaled thereabout, drivlng connection betveen 'saidsleeves for causing smultaneousglrotation thereof, a plurality of.dilierent sized .gears on said driving sleeve, a tumbler, a gear onsaid tumbler arra ed to selectively mesh withl the gears of sai nest Aln a lathe, the combination of a spindle, Ea' driving sleeve and a drivensleeve of gears, a tumbler-gear with which saidlestnamedgearfl1as-driv1ng connection, Leib-i111@ wheel on sa1dsp1ndle, and apl'mon meshing I f all 1],0V

therewith havin coincident axis .with s tumbler` and tum ler-gear. v

33. Iny wlathe, the combination of spn-` dle, a driving sleeve and adriven sleevejour-f naled thereabout, a nestv of diilerentl sized gearsv`on said driving sleeve, a .tum lenta shift'able gear ori-said tumblerarran ed to selectively mesh with the gears-of sai v 4nest of gears,tumbler-geler having driving con,- nection therewit @spindle-'gear'normall loosely ,"rotating,aJ ntrsaid spindle in' mes aid tuxnblr-geagaclutch between gear and turnblerjorfdriving said spindle, and means forinterru ting said last-named driving connection an operatively connect-`ing-saidrclutch.

@with the latter, a slidable sleeve selectively. mesh the gears, apinion operated thereby, an inter-v4 '34. In a lathe, the combination ofa spindle, a driving sleeve and a driven sleeve loosely rotatingthereabout, means for con- ,f

necting said sleeves for. causing simultaneous rotation thereof, a nestof diversely sized gears on said driving sleeve, a tumbler, ashiftable-gear on said t-umbler arranged to gears of said nest of nallytoothed gear with which said pinion meshes, an externally toothed gearrotating and lhaving driving .connection wit-h said driven sleeve, aclutch between said slidable sleeve and the spindle, said slidablesleeve having a gear thereon meshingsaid extervnally ltoothed. gear,bull -wheel on the,

Spindle, a pinion meshing therewith having coincident axis 'with saidinternally and externally toothed gears and said tumbler, and means forshifting said last-named gear and `clutch. 'f35. In a? lathe, thecombination of a spindle, a driving sleeve and a driven sleeve looselyrotating thereabout, means for connecting said sleeves for causingsimultaneous rotation thereof, a nest of di versely sized gears on saiddrivin' sleeve, shiftable' gen1" on lsai tumbler arranged to selectivelymeshl the gears of said nest of gears, a pinion operated thereby, aninternall f toothed gear with which said pinion meshes, an vexternallytoothed gear rotating with' the latter, a slidable sleeve'telescopiugand having driving connection with said *driven sleeve, a clutchbetweensaid slidable sleeve and the spindle, said 'slidable sleeve having agear thereon meshing said externally toot-hed gear, a bull-wheel on thespindle, la pinion meshing therewith havin coincidentk axis with saidinternally an externally toothed gears and saidtumbler, and means forshifting said last-named gear and said clutch, said shifting mearfscomprising a tumbler-lever rockable about its axis. A

36. In a lathe, the combination of a spindle, a driving sleeve and, adriven sleeve loosely rotating thereabout, means for connecting saidsleeves for causing simultaneous rotation thereof, a nest of di v erselysized gears on Said driven sleeve, a tumbler, a

,.shiftable-gear on said tumbler arranged to selectively mesh the gearsof said nesty of gears, a pinion operated thereby, an internally toothedgear with which said pinion nies los, an externally toothed gearrotating with the latter, a slidable sleeve telescoping and havingdriving connection with said driven sleeve, a clutch between saidslidable sleeve and the spindle, said slidable sleeve having a gearthereon meshing said externally toothed gear, a bull-wheel on /thespindle, a pinion meshing therewith having coincident axis with saidinternally and extelescoping a tumbler, av

ternally toothed gears and said tumbler, and means for shifting saidlast-named gear and said clutch comprising a shaft for saidbullwheel-pinion, a` toothed collar thereon, a

f pinion on said .tunibler-lever enffaging With the latter, a shiftingblock, said collar and shifting-block having engaging spaced contarts.

, 3T. Ina lathe, the combination of'a spindle, a driving sleeve and adriven sleeve loosely rotating thereabout, means for connecting saidsleeves for causing simultaneous rotation thereof, a nest of diverselysized gears on said driving sleeve, a tumbler, a shiftable-gear on saidtumbler arranged to selectively mesh the gears of said nest of gears, a.pinion operated thereby, an internally toothed gear with which Saidpinion meshes, an externally toothed gear rotating with the latter, aslidable sleeve telescoping and having driving connection withsaidldriven sleeve, a vclutch between lsaid slidable sleeve and thespindle, said slidable sleeve having a gear thereon meshing saidexternally toothed gear, a bullwhcel on -the spindle, a pinion meshintherewith having coincident axis with sai internally and externallytoothed ears and said tumbler, and means vfor shi ting said last-namedgear and said clutch comprisin a shaft for said bull-Wheel-pinion, atoothe collar thereon, a pinion on said tumblerlever enga-ginortherewith, a shifting-block,

said collar ant shifting-block having enga Aing spaced contacts, and areleasable latci' on said block 'engaging one of the contacts on saidcollar.

38. In a lathe, the combination of a spindle, a bull-wheel at its innerend, a inion meshing therewith, a shaft there or, a tumbler pivotedabout said shaft, a tumblergear on said shaft, a tumbler pinion in oerative engagement with the latter, a plura ity of driving ears ofdiffrent' diameters rotating loose y about said spindle, and means forcausing operative enga ement between said tumbler-pinion and se ectiveones of said last-named gears.

.39; In a lathe, the combination of a spindle, a bull-Wheel at its innerend, a inion meshingy therewith, a shaft 'there or, a tumbler pivotedabout-said shaft, a tumblergear on said shaft, a plurality of tumbler-)inions in operative `engagement with the atter, a plurality of drivingears of different diametersrotating loose y about said spindle, andmeans for causing operative enw gagement selectively between saidplurality of tumbler-pinions and selective ones of said last-namedgears.

40. In a lathe, the combination of a spin-l dle, a group of diverselsized ears rotatable thereabout, a tum ler an tumblergear, a pluralityof.tumbler-pini ons on said tumbler operatively .oonnected `with saidlao Vtumbler-gear `and arranged to selectively mesh .selective ones of'said group of d1` .versely-sized' gears, and driving connection betweensaid tumbler-gear and spindle.

41. In a lathe the combination of a spindie, a. bull-whee at its innerend, a pinion therefor, ashaft for the latter, a tumbler.V

pivoted about said shaft, a tumbler-wheel on said shaft, atumbler-pinion having operative engagement with saidwheel, a pluralityof diversely sized driving gears rotating loosely about said spindle,and means for kcausing operative engagement between said tumbler pinionland selective ones of .said last-named gears, a spindle-pinion normallyrotating loosely about saidA spindle and meshing with saidtumbler-wheel, a clutch between said spindle-pinion and spindle, andmeans for operating the same. A

42. In a lathe, the combination of a spindie, a bull-wheel therefor, apinion having operative engagement with the latter, a shaft for thepinion, a tumbler pivoted about said shaft, a tumbler-wheel on saidshaft, a tumbler-pinion/having operative engagement with saidtumbler-wheel, a plurality of diversely sized driving gears rotatingloosely about .said spindle, meansl for causing operative connectionVbetween said tumbler pinion and selective ones of said driving gears, aspindle-pinion normally rotating loosely about said spindleandoperatively geared to said tumbler-gear, a clutch between saidspindle-pinion and spindle, and means for sliding a clutch-member andsaid bull-Wheel pinion longitudinally for causing operative drivingconnection to said spindle throughy said clutch or through said bull.-wheel pinion. l

43. In a lathe, the combinationof a spindle, a'bull-wheel therefor, apinion having operative enga ementt 4with the latter, a shaft for thepinion, Aa tumbler pivoted about said shaft, a atu'i'nbler-wheel'onsaiclshaft,

a 'tumbler-pinion yhaving -o erative engage-l ment with said tumbler-Weel, a plurality of different sized driving gears rota-ting looselyabout said spindle, means for causing operative connection between saidtuinbler pinion and selectiveones of'said drlv.

ing; gears,Y a spindle-pinion normally r0- tating loosely `about saidspindle and o eratively geared to said tumblerear,y a c utah betweensaid spindleinion anc spindle, and means'V for .sliding a c utc-h memberand said bull-Wheel pinion longitudinally for causing operative drivingconnection to said spindle through said clutch or through said bull-Wheel pinionsa id operating means comprisingu.tun'ibler- "..rxrocling onits longitudiiabout said shaft, a tumbler-wheel on said ,hafljullwheeltherefor, a bull-Wheel; "pinion, a' 'shaft'threfor,"a tumbler pivotedyand selective ones otvsaid drivin gears, a sleeve rotating looselyabout sai spindle,

a teleseoping sleeve taking thereover and splined thereto, a gearon saidtelescopin gear having driving connection with sai tumbler-wheel, aclutch between the 4latter and the spindle, rcleasable driving connec?.

tion between said first-named sleeve and one of said driving gears, andmeans for selectively causing operative drivingconnection between themembers of said clutch and between said bull-wheel and bull-wheelpinion.

45. ln a lathe, the combination of'a spindle, a bull-wheel therefor,a'bull-wheel pinion, a tumbler barrel, internally toothed and externallytoothed gears therefor, said lastnamed gears and the tumbler-barrel andpinion having coincident axis, a shaft journaledin said tumbler-barrel,a pinion meshing with said internally toothed' gear `and an overhangingpinion on said shaft, a nest of diversely-sized driving gears rotatingloosely about said spindle, means for causing operative engagementbetween said overhanging pinion and selective ones of said drivinggears,a spindle-pinion normally loosely rotating about said spindle andmeshing with said externally toothed gear, a 'clutch between saidspindle-pinion and spindle, and means for selectively causing operativeconnection between the members of,A said clutch and through saidtumblershaft to said bull-Wheel. 'f

46. In a lathe, the combination of a spindie, a group of diversely-sizedgears journaled thereabout, a prime-mover therefor, a tumbler andtumbler-gear, gearin between said tumbler-gear and the spindle fordriving said spindle, a pinion-shaft on said.

tumbler driven from said tumbler-gear, and change-pinions of differentdiameters adapted to be selectively operatively secured to toselectively mesh said group of diversely sized gears.

4:8. In a lathe, the spindle 'and speed changing mechanism therefor, ofa speed changing guide comprising an index-member and anindicator-memlll() Combination with av guide and s relative 'seitig-uie.

. ber therefor, said index-member comprising a column ofdesirablecircumferential speeds and Columns of speed changing mechanismconnections for 'approximatle'ly` attaining said speeds, and anvoperative.connection between a lvmegnber of: said speed changingSpending to the relative positionfbetweeii the members of said guide. A49.1111 a' lathe.y the combination with aspindle and' speed changingmechanism therefor, of a` speed clianging'g'nide coinprising anindex-member and anmdicatormember therefor, said index-member coni--Qprising a column of desirablegircuiiifcrential speedsand columns ofgearing'for approximately attaining said speeds, one of saidA members.having operative connection -with 'a partfo'r parts of said speedchanging: mechanism for causing positioning'ot said part or 'partstherein to correspond withr the' osition bet Ween' said` members of 50.In 'ai' lathe,l the domb'inaltion "-itlr a )indl'e' and speed tive,connection betweenga'iinember of said -spe'ed changing giiidefan'd apart .of said -speed chan ing mechanismfoipositioning said'part said seed changing mechanism,

to correspond tot e relative positioning 'of said members of said guide.

.151. In a lathe, the combination 'with `a spindle and speed ,changingmechanism therefor, of a speed changing guide comprising an index-memberand an indicator-member, .said index-member comprising a colnmnofdesirable circumferential 'speeds and-primary columnsof workdiameters. and speed changing mechanism connections therefor arrangedinto secondarygcolumns of 7work diameters and speed changing mechanismconnections for said respectivespeeds and an operative connectionbetweena member of said speed chnnging'giiide' and a part of said speedchanging mechanism forl positioi1ing saidparty of said speedv changingmechanism bythc relativepoSit-ion between saidmembers.

152.11159. lathe,l the combination with a 's rindle and. 'speed ychanging mechanism t 'e'rcfoilg of a speed changing guide com-` prisingan index-member and an indicatormember, an operative connection betweenla l,'Ipei'nbero saidQspeed changing guide and a 'Apartof said seedchanging mechanism for determin't e position of th'elatter, said,seconda id speed changing mechanism' for causing'positioni-ngin thelatter cor'rev lspindle members. i

index-member comprising a` 'c oliiinn of dc- 5 siralile circumferential'speedsand primary` cohnnns of work diameters arranged into columns otwork diameters for g ven speeds, and shifting means lfor said scribed. Av

53."ln alathe, ,the combination with a and speed changing' mechanismtherefor, ofr a, si eed changing guide coinprisiiig an iiidex-i icmbcrand an indicator- 75 member therefor, said index-member con'iiprismg acolnmn ot desirable circumferential speeds and columns Vofvw'orkdian'iefers `therefor arranged into secondary column of ,workdiameters for each given speed, and 80 a shifter hving connection lwithi member o saidspeed ychanging guide-anda part, of said speed changingniechanism for simultaneously `f-hit'tingsaid member and part,substantially as described.

,54.*1'11 a" latlie,' the combination with a 'spindle and.l speedchanging mechanism therefor, of a speed changing guide comprising. arotatable member andan indicatormeinber therefor," said rotatable4member 99 having a peripheral. inde); coinprisinu' colunms of`desiredvcii'ciinifereit-ial spec' s and work diameters", and operativeconnection betweenA a member ,ofsaid speed-changing guide anda pai-tofsaid speed changing- 95 'mechanisrm and constructed and arranged forpositioning said part of said`V speed changing mechanism through saidoperative connection to correspond with 'the relative position betweensaid.' index --membei vsind 100 indicator-member.

55.111 a lathe, the combination 'fwithg av spindle and speed changingmechanism therefor, of a speed 'changing guide comprising a Arotatable`member and an indicator- 105 member, said rotatable member having at"Vperipheral, index comprising a column of desirable circumferentialspeeds and co1- umns of gears for approximately attaining said speeds,4one 'of said members havingi 110,

operative connection .with a part ofsai speed changing mechanism'forcausing rela.- tivegpositioning in the lattertocorrespondl to `therelative 'positioning betweens'aid 56. In a lathe,l -theidombinatioiiwith a spindle and speed changing mechanism therefor, of a speedchanging guide comprising an lindex-member and an indicator-memsaidindex-nicml'ier comprising 120 ber therefor.

.longitudinal columns of desirable circumviferentiai speeds andconneetionsifm' approximate'iy attaining said speeds and transversecolumns indicating a desirable circumv fercntiral speed and connectionsfor approxi- 1425.

mately attaining said speed, an operative connection between a member ofsaid speed changing guide and a member of said Speed i.

operative connection, lsnbstaiitially as j'de- 70 to mesh, and meansfor'ipoking said speedy barrel.

58. In combination, in a lathe, a support, a spindle and a s eed-barreljournaled therein, a plurality o meshing gears having eoincident rotary.axis with each of the latter respectively, a pinion mountedeccentrically on the speed barrel intrain With the gear on said barrel,a gear taking about the .spindle with which-said pinion is adaptedShiftin a, Sped barre1.gear and driving means between said nest of 5559. nrcornbination, in a lathe, a sup ort, teSCOPlDg gears and SadSPlDCue all@ be? Spindle mda Speed barre1 jogmaledt eI-e tween saidtumbler-gear and ,the driven 30 in, av lurality of meshing gears at thetail Shaftend o the support havingcoincident rotary In testlmolywhereof: I have Subsclbed axis with each of the latter respectively, amy mm1@ here-t0 1n the Presence 0f two Sub' 70 to mesh, ,and a shaftjournal'fl in the speed vbarrel and movable at right rangles to thespindle for rocking lthe speed barrel and rockable about its'longitudinal axis for plurality of driving ears loosely journaled aboutthe spindle an slidable longitudinally thereof, a pinion mountedeccentrically on the speed-barrel in train with the gear on said ,barreladapted to selectively mesh with said/slidable gears, said barrellhnvingaV rement in Gearing,

gears, substantially as escribed.

60. In` a` la'th, the combination with the Wheel normally looselyrotating :about the Aspindle,a clutch between said spindle-wheel andspindle, .said spindle-wheel and clutch and bull-Wheel being closelyadjacent each other at the inner end of the spindle, a prime moveradjacent the outer end of the spindle, a pinion for the bull-wheel, atumbler and tumbler-wheel having coincident yaxis with said pinion, saidtumblerwheel meshing with said spindle-pinion, a nest of diversely sizedgears Journaled loosely with said prime mover about said spind e, atumbler-pinion operatively conneeted with said tumbler-wheel andselectively meshing selective ones of said nest of gears for impartingvarious speeds to said spindle, a driven shaft, arnest of telescopinggears between said driven shaft and spindle, a tumbler-plate with gearand pinion theregspindle, a bulliwheel therefor, a spindle.

for', change-gears selectively connected with said `pinion andselectively meshing selective ones of said nest of telescopnig gears,

Witnesses:

S. lNI. BLACKBURN, S. I". ILIERB'SLEB.

' It is'hereby certied that in, Lettere, Patent .Nd-920,664, granted May4 1909 ,upon the application of'William L. Sclielle'nbaelnof Hartwe1l,0hio,

.for an improve- Verrori-1 appear in the printed specification requiringcorrectionQ as follows: In line 7l. page 2. the word integral y ofthesecond witness. "S, F. Herbsleb, should Letters Patent `should be readwithvthese corrections th should read infernal, and the signature readA. F. Herbleb; and that the saidv form to the record of the case in thePatent Oee.

signed and r.sealed this 15u11 day of June, A. D., 1909.

erein that the same may con- [SEAL] o. BILLINGS,

i .Acti'r'igf Commissioner of Patents.,

to mesh, and means for'ipoking said speedy barrel.

58. In combination, in a lathe, a support, a spindle and a s eed-barreljournaled therein, a plurality o meshing gears having eoincident rotary.axis with each of the latter respectively, a pinion mountedeccentrically on the speed barrel intrain With the gear on said barrel,a gear taking about the .spindle with which-said pinion is adaptedShiftin a, Sped barre1.gear and driving means between said nest of 5559. nrcornbination, in a lathe, a sup ort, teSCOPlDg gears and SadSPlDCue all@ be? Spindle mda Speed barre1 jogmaledt eI-e tween saidtumbler-gear and ,the driven 30 in, av lurality of meshing gears at thetail Shaftend o the support havingcoincident rotary In testlmolywhereof: I have Subsclbed axis with each of the latter respectively, amy mm1@ here-t0 1n the Presence 0f two Sub' 70 to mesh, ,and a shaftjournal'fl in the speed vbarrel and movable at right rangles to thespindle for rocking lthe speed barrel and rockable about its'longitudinal axis for plurality of driving ears loosely journaled aboutthe spindle an slidable longitudinally thereof, a pinion mountedeccentrically on the speed-barrel in train with the gear on said ,barreladapted to selectively mesh with said/slidable gears, said barrellhnvingaV rement in Gearing,

gears, substantially as escribed.

60. In` a` la'th, the combination with the Wheel normally looselyrotating :about the Aspindle,a clutch between said spindle-wheel andspindle, .said spindle-wheel and clutch and bull-Wheel being closelyadjacent each other at the inner end of the spindle, a prime moveradjacent the outer end of the spindle, a pinion for the bull-wheel, atumbler and tumbler-wheel having coincident yaxis with said pinion, saidtumblerwheel meshing with said spindle-pinion, a nest of diversely sizedgears Journaled loosely with said prime mover about said spind e, atumbler-pinion operatively conneeted with said tumbler-wheel andselectively meshing selective ones of said nest of gears for impartingvarious speeds to said spindle, a driven shaft, arnest of telescopinggears between said driven shaft and spindle, a tumbler-plate with gearand pinion theregspindle, a bulliwheel therefor, a spindle.

for', change-gears selectively connected with said `pinion andselectively meshing selective ones of said nest of telescopnig gears,

Witnesses:

S. lNI. BLACKBURN, S. I". ILIERB'SLEB.

' It is'hereby certied that in, Lettere, Patent .Nd-920,664, granted May4 1909 ,upon the application of'William L. Sclielle'nbaelnof Hartwe1l,0hio,

.for an improve- Verrori-1 appear in the printed specification requiringcorrectionQ as follows: In line 7l. page 2. the word integral y ofthesecond witness. "S, F. Herbsleb, should Letters Patent `should be readwithvthese corrections th should read infernal, and the signature readA. F. Herbleb; and that the saidv form to the record of the case in thePatent Oee.

signed and r.sealed this 15u11 day of June, A. D., 1909.

erein that the same may con- [SEAL] o. BILLINGS,

i .Acti'r'igf Commissioner of Patents.,

Corrections n Letters Patent No. 920,664.

It is hereby certified that in Letters Patent No. 920,664, gradnted May4, 1909, upon the application of'William L. Schellenba-ch. of Hartwell,Ohio, for` au improvvment in Gearing errors appear in the printedHpeoilvaton requiring correction. as

follows: In lino T1. page 2. the word integral F. Herbsleb,

Lotters Patent should be read with those corrections therein that. thesame muy coushould wml 'n/emol. and the signature oftho second witne. 5.should road A. F. Herbsleb; and that the said form to the record of thecase in the Patent Oce.

Signed and sealed this 15th day of June, A. D., 1909.

[SEAL] C. C. BILLINGS,

Acting Commissioner of Patents.

